#if 0
#include "stdio.h"

int main(){
    float a,b,pi = 3.14159,r = 15.35;
    a = r * r * pi;
    b = 2 * r * pi;
    printf("are = %f\n",a);
    printf("cir = %f\n",b);
    return 0;
}
#endif
